java Swing 界面化查询数据库表

两天写的。没有按钮对话框功能，只是简单的实现。

当然代码上有很多需要优化的，基本需要重写哈哈哈。但是我怕以后有需要所以还是存一下好了。《把RS结果集，放vector里面，用vector构造JTable》

 1 package meterSqllitedataFinal;
 2
 3 import java.awt.Dimension;
 4 import java.util.Vector;
 5 import javax.swing.JButton;
 6 import javax.swing.JFrame;
 7 import javax.swing.JLabel;
 8 import javax.swing.JScrollPane;
 9 import javax.swing.JTable;
10
11 public class mainn extends JFrame {
12     //private Vector rowData, columnName;
13     private JTable jt = null;
14     private JScrollPane jsp = null;
15     private JButton jb = null;
16
17     public static void main(String[] args) {
18         // 显示应用 GUI
19         mainn miann1 = new mainn();
20     }
21
22     public mainn()
23     {
24         sqlitedata a = new sqlitedata();
25          //初始化JTable
26         a.mainjj();
27
28         jt = new JTable(a.rowData, a.columnName);
29
30         jsp = new JScrollPane(jt);
31
32         this.add(jsp);
33         this.setTitle("by:Zing庄     SqlliteConnect");
34         this.setSize(460, 200);  //这是大小
35         this.setLocation(300, 200);  //这是位置
36         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
37         this.setResizable(true);  //尺寸是否可变
38         this.setVisible(true);  //显示与隐藏
39     }
40
41 }

package meterSqllitedataFinal;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import java.util.Vector;

import javax.swing.JScrollPane;
import javax.swing.JTable;

import org.omg.CORBA.PRIVATE_MEMBER;

public class sqlitedata {
    public  Vector rowData, columnName;
    private JTable jt = null;
    private JScrollPane jsp = null;
    int kk = 2;

    public void mainjj() {
        Connection c = null;
        Statement stmt = null;
        String kongge = new String("\t");
        String huiche = new String("\n");
        String shuchu = "";

        rowData = new Vector();
        try {
            Class.forName("org.sqlite.JDBC");
            c = DriverManager.getConnection("jdbc:sqlite:d:\\EasyEnergyData\\EasyEnergy.data\\");//tim.data  EasyEnergy
            c.setAutoCommit(false);
            System.out.println("Opened database successfully");

            stmt = c.createStatement();
            ResultSet rs = stmt.executeQuery("SELECT * FROM Meter;");//COMPANY
            ResultSetMetaData data = rs.getMetaData();

            columnName = new Vector();
            System.out.println("dd");

            for (int i = 1; i <= data.getColumnCount(); i++) {
                shuchu = data.getColumnName(i);
                columnName.add(shuchu);
            }

            while (rs.next()) {

                    Vector line1 = new Vector();
                    for (int k = 1; k <= data.getColumnCount(); k++) {

                        shuchu = rs.getString(data.getColumnName(k));
                        line1.add(shuchu);
                        System.out.println("这里在循环没有错"+line1);
                    }
                    rowData.add(line1);
                }

            rs.close();
            stmt.close();
            c.close();
        } catch (Exception e) {
            System.err.println(e.getClass().getName() + ": " + e.getMessage());
            System.exit(0);
        }
        System.out.println("Operation done successfully");

    }

}

需要导入的驱动

项目需要导入sql驱动。build Path →Configure Build Path →Add External JARs

http://blog.csdn.net/qq_21478795/article/details/51579181

这个是借鉴的地方。

https://zhidao.baidu.com/question/2202449700556627748.html

这个借鉴如何传输进数据

http://blog.csdn.net/a412588063/article/details/21242887

这没借鉴过，但是挺详细的。

http://www.runoob.com/sqlite/sqlite-java.html

这里是sqllite驱动下载